Ferric chloride-Silica

Ferric chloride-Silica, 134 Methanesulfonyl chloride-4-Dimethyl-aminopyridine, 176 Dehydrobromination Lithium 2,2,6,6-tetramethylpiperidide, 167... 

Ferric chloride-Silica, 134 Titanium(IV) chloride, 304 Cyclopentenones by intramolecular al-dol reaction... 

B-Bromocatecholborane, 47 Bromodimethylborane, 47 B-Chlorocatecholborane, 47 Chlorotriisopropoxytitanium, 213, 226 Copper(II) bromide, 112 Dialkylboryl trifluoromethane-sulfonates, 340 Dichlorobis( 1 -phenylethoxy)-titanium(IV), 12 Dichlorobis(trifluoromethane-sulfonato)titanium(IV), 102 Dichlorodiisopropoxytitanium(I V), 12 Diethylaluminum chloride, 173 Diethylaluminum fluoride, 25 Dimethylaluminum chloride, 5 Ethylaluminum dichloride, 5, 44, 306 Ferric chloride, 133 Ferric chloride-Silica, 134 Isobutyl(2,4,6-tributylphenoxy)-aluminum trifluoromethanesulfonate, 113... 

Ferric chloride-Silica, 134 Ferric nitrate/KlO Bentonite, 134 Grignard reagents-Iron(III) reagents, 211... 

ESTERS Sodium benzeneselenolate. ETHERS Boron tribromide-Sodium iodide-15-Crown-5. Boron trifluoride etherate. Ferric chloride-Silica. Lithium iodide. Silicon(IV) chloride-Sodiuiu iodide. Sodium iodide-Pivaloyl chloride. 2,4,4,6-Tetrabromocyclohexadiene. Trichloro(methyl)silane. 

Ferric chloride-Silica, FeCl3/Si02. The pale, green powder can be prepared by stirring a mixture of Si02 with anhydrous FeCb (8% of the weight of Si02). 

OXIDATIVE PHENOL COUPLING Ferric chloride-Silica. 

EPOXIDES Alumina. Aluminum iso-propoxide. f-Butyl dilithioacetoacetate. Diethylaluminum 2,2,6,6-tetramethyl-piperidide. Dilithioacetate. Dimethyl malonate. Ferric chloride-Silica gel. Lithium acetylide. Lithium di-isopropylamide. Sodium boro-hydride. 

Coagulation involves the addition of chemicals to alter the physical state of dissolved and suspended solids. This facilitates their removal by sedimentation and filtration. The most common primary coagulants are alum ferric sulfate and ferric chloride. Additional chemicals that may be added to enhance coagulation include activate silica, a complex silicate made from sodium silicate, and charged organic molecules called polyelectrolytes, which include large-molecular-weight polyacrylamides, dimethyl-diallylammonium chloride, polyamines, and starch. 

The parent siliceous materials of the SBA-15 and MLV types were synthesised after typical procedures [2], The carbon replicas were prepared via polymerisation, catalysed by ferric chloride, of pyrrole introduced into the mesopores of matrices [3]. The products were characterised by the nitrogen adsorption, TEM, and thermal analysis (DTG, DTA). The nitrogen content in carbons was determined using elemental analysis, XPS, and EDX, while the Si and Fe contents, with XPS. The replicas of SBA-15 and MLV-0.75 are denoted as CMK-3Nx and OCM-.Nx, respectively, were x refers to the number of g of FeCl3 per 1 g of silica used for preparations. 

The insoluble excipients are removed by centrifugation. The solution is applied on a silica gel plate using the same conditions as listed previously in section 6.5.1. Additional detection sensitivity may be obtained by spraying with a 6% solution of ferric chloride followed by a 2% solution of potassium ferricyanide. 

In-situ IR-spectroscopic characterization of the Friedel-Crafts acylation of benzene in ionic liquids derived from AICI3 and FeCl3 showed that the mechanism of the reaction in ionic liquids was the same as that in 1,2-dichloroethane (128). The immobilization of ferric chloride-containing ionic liquid onto solid supports (e.g., silica and carbon) however failed to catalyze the acylation reaction, because leaching was a serious problem. When the reaction was carried out with gas-phase reactants, catalyst deactivation was observed. 

Kim KS, Song YH, Lee BH, Hahn CS (1986) Efficient and selective cleavage of acetals and ketals using ferric chloride adsorbed on silica gel. J Org Chem 51 404 -06... 

Oxidative coupling of phenols and phenol ethers.2 This reaction can be conducted with ferric chloride supported on silica gel. 

J-Butyl Ether. -Butyl ether is prepared by dehydration of -butyl alcohol by sulfuric acid or by catalytic dehydration over ferric chloride, copper sulfate, silica, or alumina at high temperatures. It is an important solvent for Grignard reagents and other reactions that require an anhydrous, inert medium. /7-Butyl ether is also an excellent extracting agent for use with aqueous systems owing to its very low water-solubility. 

Boduszynski et al. (1980) described an elaborate new separation procedure for isolating and concentrating chemically defined compound types rather than solubility types. A residuum (675°C+) is first fractionated by chromatography with an ion and cation resin to isolate acids and bases, followed by coordination chromatography on ferric chloride Attapulgas clay to separate the remaining neutral Lewis base and hydrocarbon fraction. This latter component is further separated into saturate and aromatic hydrocarbons over silica gel. 

Bulk Nandrolone (19-Nortestosterone) TLC Dissolve in water, pH 5.5-9.0, extract with CHCI, Silica (activated) MeOH-ammoniated butanol, butanol prepared by shaking 100 ml butanol with 60 ml NH4OH, discard 1% lower layer Ferric chloride USP 23 [2,3,10,958, 1133,1134] [5]... 

Diferro silicide, as obtained by these methods, occurs as small prismatic crystals, possessed of metallic lustre, magnetic, and of density 7 00 at 22° C. Hydrogen fluoride attacks it readily, and aqua regia decomposes it, yielding silica and ferric chloride. Hot potassium hydroxide is without action on it. It is decomposed by chlorine with incandescence. 

Acetals are also cleaved by ferric chloride either absorbed or not absorbed on silica gel. The TBS group (see Table 1.2) is not deprotected under these conditions. Depending on the number of equivalents of ferric chloride used, the selective deprotection of either one or both acetal groups can be achieved (Scheme 1.31). 

Poly(w-carboranyl-siloxane) elastomers containing a mixture of di-methyl-and methyl(phenyl)-silyl units were synthesised using the Ferric Chloride catalyzed condensation reaction between di-chloro-di-organosilane and 1,7-bis(di-methyl(methoxy)silyl)-/w-carborane. Silica Nano tubes synthesised using i 7situ growth of DL Tartaric acid nanocrystals and concurrent sol-gel hydrolysis and condensation of silane. 

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